Automatic door closer and lock



Juhe 29 1926. 1,590,690

W. B. HURD AUTOMATIC DOOR CLOSER AND LOCK Filed Nov. 9. 1925 FT'FZ ATTORNEY Patented June 29, 1926.

mm STATES PATENT all i F i Q E WILLIAM B. HURID, OF MUKILTEO, WASHINGTON.

AUTOMATIC DOOR CLQSER AND LOCK.

App1ication filed November 9, 1925. Serial No. 67,898.

positive lock for doors or the like which is entirely concealed. within the doors.

Another object of the in'ventionis to provide a lock for doors or the like which will automatically close a door when the door is released.

A further object of the invention is to provide a means for locking and closing a door which does not have a latch at the outer edge of the door.

And a still further object of the invention is to provide an automatic means for closing and locking a door which may be released by a latch on one side of the door, or by a key, handle, or knob, from either side of the door.

And a still further object of the invention is to provide a device for automatically closing and locking doors which is of a simple and economical construction.

WVith these ends in view, the invention embodies a casing that may readily be installed in a door, levers pivotedly mounted onthe said casing, a spring within the said casing, a lever pivotedly attached to one of the levers on the said casing and extending to a point at the rear of the inner edge of the door, a lever for operating the said former levers, a means for locking the said former lovers in the closed or open position, and means for releasing the said locking means from the exterior of the said door. I

Other features and advantages of the invention will appear from the following description, taken in connection with the drawings, wherein Figure 1 is a View looking at the inside of a door with part broken away to show the lock.

Figure 2 is a plan view of the lock showsurface of the door.

7 The casing 1 may be of any suitable shape or size and may be arranged in any suitable manner: In the design shown the casing 1 is of rectangular shape and has a coil spring 4 in it which is mounted upon a shaft 5 shown in Figure l. The shaft 5 extends through the casing and has a handle 6 on the outer end which extends beyond the outside of the door, and a bar 7 on the inner end'which is pivote'dly attached to a bar 8 through a pin 9 and to the inner end of which the rod -2is pivotedly attached by a pin 10. The opposite end of the rod 2 is attached to an eye 11 at the inner corner of the door frame at the rear of the door as shown in Figure 2. It will be noted that as the rod 2 arrives at the normal position shown in Figure 1 the inner end of the rod passes below the center of the pin 5 so that the door is positively and rigidly held in the closed position. The spring 4 acts to close the door and after it is closed, or the inner end of the rod2 passes below the center of the pin 5, so that the outer end of the bar 8 will engage a projection on the side of the casing, as shown, the spring will keep a tension on the levers so that the door will not only belocked, but resiliently held closed,

, andit will be observed that it will be impossible to open the door without raising the inner end of the rod 2 above the center of the pin 5. The rod 2 is provided with a turnbuckle 13 by which its length may be readily adjusted. The outer end of the bar 7 is provided with a pivotally attached lever 14: which has a handle 15 that projects be yond the inner face of the door so that it may be gripped by hand and it-will be observed that when the handle is raised it will force the clamping member 16 at the inner end of the lever 1 1 against the face of the casing and thereby lock the bar 7 in any position and the bar 7 will in turn readily hold the door in any position. r

The device maybe operated by a lever '17 which is fixedly mounted upon the pin 5 and which is provided with a handle 18 that extends through an opening 19 in the inner At the lower end of the lever 17 is a pin 20 that engages the under surface of the bar 7 when the bar is in the normal position as shown in Figure 1, and it will be observed that when it is desired to release the lock the handle 18 may be moved to the upper end of the opening 19 so that the pin 20 will move the bar 7 and the inner end of the lever 2 upward until it is above the center of the pin- 5. The device may also be operated by turning the handle 6 at the outer end of the pin which will also move the bar 7 and raise the inner'en-d of the rod 2.

position.

ll be understood that-changes may be At the inner end of the casing is a means for locking the device with the doorineither the open or. closed position. Thls' extending down-ward froina plate 26 and thereby rotate the pin 3 which will in turn operate the plate 22-h); lock or releasethe said bar 8. The pin 3 isprovided with-a lug-,2! which engages sprmgQS assho'wnin Figure t to resiliently hOlClwllt-IH either It wi made in the construction without departing from-the spirit of" the inventiom One of which-changes may be in thdposition of thedevice onthe door ganother may be in the use of other means for operating the operating levers,and'still anotlier may bein the use of other means forlocking the device in the open or closed position.

he COIlStitlCtlOll W1ll---be readily unden stood from the foregoing descrlptiom .To

use the device it' may readily be installed in a door or thelike asdescribed and it will be observed that as the device is released the door may readily be swungopen and when-the-door;isreleased it will automatically close and the device will automatically loclpit in the closed position.- It will also be observed that by turning the handle 21 the device maybe lockecl;;f from the interior so that it will be impossible-to open it fromthe]; exteriorwithout the use of ahey; It

will also be observed that although the device is particularly adaptablefor motor ve hicle doors, it may be used on-any type" of door where it'is desirable-to have the door swing to the closed positionand-automatically lock. I V

IIaving thus fully described the invention, what I claim as new and desire to secure by Letters Patent, is

1.-In' a1 device for closing; and locking doors or the like, a plurality of levers mounted on asuitable casing, arod attached to onset the said levers and also-to the interior'of a frame in which-the door maybe mounted, said levers be ng arranged so that inner end of the said rod will pass below acenter as the door closes to positively lock the said door until the inner end of the said rod is moved above the center, resilienti'neans for operating the levers to close the said door and means for looking the said ope'rati'ng'levers in either the open or closed positions.

2. In a device of the class described, a plurality of; levers'pivotally supported, a doorto whichthe levers are attached, said door being-hinged at'its outercorners, an adjustable rod attached to one of the said levers and also to the inner edge oftheside of the frame to 'WlllCllilllG door is'hinged,

said levers being arranged so that the inner end of the said rod-w1ll pass below the point, at which it is pivotally supported as the door closes, resilientmeans 'forclosing.

the said door and other means operable from the interior or exterior of the said door for-loeking the said levers in the closed orreleased position.

3'. In a device of the class described, a"

door; hinges for supporting thedooratits rear outer edge, aplurality of levers-pivotedly mounted in the said door, anadjustable rod-extending from the said levers to a pointat the inner edgeof'th'eside-of the.

frame-tozwhieh the door is hinged, means for operatin'g the said-levers, resilient means forioperatingi the said levers-to closethe .door and move the inner end of the saidadjustable rodto a point below'that at which itis.' pivotally mounted, and other'means for locking the said levers.

' 4. In adevice of the classdescribed, a

door hinged at its outer edge, a rodextend- 111g through-the said door and attached-to the inner edge of the side ofthe frameto which the door is hinged, means in the door forpivota-lly mountingthe-inner end of'the said-rod, resilient-means for bringing the inner end of the sa'idrod toapoint belowthe center at which the saidmeansis pivotally attached to the door, means for en--- gagin-g the said holding means to move the inner-end ofthesaid rod above the said center' and other means for causing the said levers to be inoperable.

5.. In a lock, a* door, a frame to which the doo-r'is hinged, arod extending lDtO the door and attached to the said'frame, means for engaginghtl e inner end of th'e'said rod to automatically close the'said door, said WILLIAM 1B,- HURD.

I hereby affix my 

